This is taken from the Print Code field on the Details tab in the company directory for the respective social insurance provider.
The correct abbreviation or name of the insurance provider is then included in the XML or PDF output.
Note: If you are submitting this form via a data mailbox, it is important to have the postal code set without spaces in your company settings. If the postal code contains spaces, the OSSZ will return the form due to invalid characters.
If you change your company settings (e.g., because you have become a VAT payer) and want to generate the Insurance Premium Overview retroactively, make sure you have corrected the postal code error in all settings.